adjustable outhaul clam cleat
This is the cleat that will fit around your boom arm to set up an adjustable outhaul. Comes with a pair of collars that wrap around the boom arm (so it will fit different diameters of booms), shims to keep it from sliding, the metal cleat, and screw to fasten it all together. If you are racing on a Bic Techno 293, a Kona One Design, or in slalom or formula - an adjustable outhaul is absolutely what you need to stay competitive on the race course. The 32mm size works on iq foil booms as well as any boom 31-29mm in diameter. The 30mm size works on booms from 29-27mm in diameter.